CS 25.307 Proof of structure

• ED Decision 2005/006/R found in: CS-25 Amdt 27 - Large Aeroplanes (Jan 2023)

CS 25.307 Proof of structure ED Decision 2005/006/R (See [AMC 25.307](#_DxCrossRefBm1709820911)) (a) Compliance with the strength and deformation requirements of this Subpart must be shown for each critical loading condition. Structural analysis may be used only if the structure conforms to that for which experience has shown this method to be reliable. In other cases, substantiating tests must be made to load levels that are sufficient to verify structural behaviour up to loads specified in [CS 25.305](#_DxCrossRefBm1709820909). (b) Reserved (c) Reserved (d) When static or dynamic tests are used to show compliance with the requirements of [CS 25.305(b)](#_DxCrossRefBm1709820909) for flight structures, appropriate material correction factors must be applied to the test results, unless the structure, or part thereof, being tested has features such that a number of elements contribute to the total strength of the structure and the failure of one element results in the redistribution of the load through alternate load paths. [Amdt 25/1]